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  • Yellowstone National Park was established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1, 1872, becoming the first national park in the U.S. Forty-four years after the establishment of Yellowstone, President Woodrow Wilson created the National Park Service, Aug. 25, 1916. A photograph of Old Faithful in Yellowstone National Park, 1870.
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  • A tourist photo of two women standing at the edge of the Grand Canyon in the early 1900s.
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  • President Theodore Roosevelt and conservationist John Muir (to the president's left) in Yosemite Valley, California, 1903.
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  • A stagecoach takes tourists past Jupiter Terrace in Mammoth Hot Springs, Yellowstone National Park. The buildings of Fort Yellowstone can be seen in the distance, 1905.
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  • Mary Crehore Bedell and her traveling companions at Yellowstone National Park, 1922. The car has several park entrance fee decals on the windshield and the AAA emblem on its grille.
    National Park Service
  • Two women in bathing suits and climbing gear hike up to an ice cave under Paradise Glacier, Mount Rainier National Park, Washington, 1928.
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  • A general view of a logging camp in the Great Smoky Mountains National Park, North Carolina, 1930.
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  • American sculptor Gutzon Borglum, who is leading the Mount Rushmore National Memorial project, and his son, Lincoln, inspect the Jefferson head from an aerial tram, Nov. 23, 1935.
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  • Blackfoot teepees at Glacier National Park, Montana, 1950.
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  • A man stands beside his automobile, examining a map at the entrance to Death Valley National Monument, 1951, in the California desert.
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  • A group of boys go off for a fishing trip in the Florida Everglades National Park, 1952.
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  • A glaciated landscape in Rocky Mountain National Park, 1953.
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  • View of the seating area and lounge at the Jackson Lake Lodge in Grand Teton National Park, near Moran, Wyoming, 1955.
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  • Bears beg for food at a car in Yellowstone National Park, August 1958.
    Jack E. Boucher/National Park Service